Door check and closer.



J. GERARD.

DOOR CHECK AND CLOSER.

APPLICATION FILED JAN-21,1916.

1,177,507. Patented Mar. 28,1916. I

WWW.

Lumam PLANOGRAPH co., WASHINGTON, D. Q

UNITED STATES PATENT oEEroE.

JOHN'GERARD, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE AMERICAN HARD- WARE CORPORATION, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CON- NECTICUT.

noon CHECK AND CLOSER.

Patented Mar. 28, 1916.

Original application filed November 5, 1915, Serial No. 59,726. Divided and this-application filed. January 21, 1916. Serial No. 73,335. j

' To all whom it may concern:

Be it known that I, JOHN GERARD, a citizen of the United States of America, residing at New Britain, Connecticut, have invented a new and useful Door Check and Closer, of which the following is a specification.

My invention relates to improvements in door checks and closers of this application, and this application is a division from my former application Serial No. 59,726, filed November 5th, 1915.

In the drawings: Figure 1 is a perspective view of part of a door casing and door showing my door controller as it would appear 1n operation, the door being open. Fig. 2 is a relatively enlarged sectional view through part of the door closer mechanism. Fig. 3 is a section on the plane of the line 33 through both the door and the casing.

For a detailed description of the various parts of the apparatus, not herein fully illustrated or described, reference may be had to my aforesaid application from which this application is a division.

In the present case 53 is a door hinged to a door casing in the usual manner.

59 is a pocket in the door casing on one side to accommodate an arm 56 and part of the arm 55, which arms in this instance constitute one eifective means for connecting the door closer to the casing, the said arms being pivotally connected to each other at 57, the arm 56 being pivoted to the door case at 58, and the arm being secured at 16 to the upper end of the door controller spindle. The face of the door 53 has a recess into which the arm 55 projects so that the connection with the upper end of the spindle may be below the upper edge of the door.

52 is a cover plate for the recess 60, said cover plate standing above the spindle. The door controller means includes a checking piston 45 located in a cylindrical bore of the frame 15.

49 is a by-pass leading from the rear of the cylindrical cavity in which the piston 45 is located, forwardly into the main chamber of the frame 15, so that when the piston 45 moves from the right to the left as viewed in Fig. 2 the fluid will flow through the bypass 49 in the direction of the arrow.

48 is the usual check valve in the piston 45 to allow the piston to move freely from right to left.

50 is a bypass valve which is threaded into the frame '15 and projects into the bypass 49 so that by screwing the by-pass valve 50 up and down, the cross sectional area of the by-pass may be varied. A suitable packe ing around the by-pass valve may be provided which maybe held in place by a 001m bined packing gland and tubular guide 51, the upper end of which may be slitted, as shown to receive a screw driver so as to adjust the gland up and down. This tubular member 51 terminates preferably slightly below the plate 52 and serves as a screw driver guide down to the slotted upper end of the bypass valve 50. The plate 52 obviously has a small opening directly above the tubular guide 51 to facilitate the introduction of a screw driver. The presence of the tubular guide 51 prevents the valve pin 50 from falling into the interior of the case in the event of the careless removal of the same or in the effort to replace the valve, should occaslon requlre.

In the present case, the invention is chiefly useful in connection with metal doors in which the apparatus is arranged between the two sides of the door as best seen in Fig. 3. Obviously, if the valve pin 50 was of such length as to be easily accessible from the outside, that is to say, if it terminated near the upper edge of the door there would be danger that in adjusting the same, the upper end of the guide pin might be accidentally caused to stand above the upper edge of the door in which event it would be sheared off. By my improvement I am permitted to employ a comparatively short pin located well below the upper edge of the door which pin may be easily inserted or removed and which may be readily adjusted at any time, since by providing the guide 51 the proper tool may be easily inserted and engaged with the bypass valve.

l Vhat I claim is:

1. In a door controller, a frame arranged to be secured in the upperedge of a door and having a checking cylinder and by-pass, a checking piston in the cylinder, a vertically movable by-pa-ss valve having a screwthreaded portion, said frame having a screwthreaded passage for the Screw-threaded portion of said valve, the screw threaded passage in said frame terminating at a pomt below the upper edge of the frame at a distance greater than the-length of the by-pass.

j'ecting upwardly from around said valve,

to a point close to and in line with said hole.

3. In a doorcontroller, a frame arranged to be secured in the upper edge of a door and including a top plate having a hole therein, a cylinder, a checking piston, a bypass-in said cylinder, a by-pass valve arranged to meet the hole in said plate and a guide projecting upwardly from around said valve to a point closeto and in line with said hole, said guide tubesurrounding.

said valve to operate-as a packinggland therefor.

4. In a door controller, a frame arranged to be secured between the walls of a door at the upper edge thereof and including a top plate, a controllerarm operatively-com nected with said controllermechanism be low said top plate and at one-side thereof,

a cylinder, a piston, said cylinder having a by-pass, a valve pin :for said :by-pass pro; vided with a screw-threaded adjusting; means, said pin terminatinga substantial distance below said top plate, a guide tube V surrounding said pin and projecting up? wardly to a point adjacent to said top; plate and an opening in said top plate in line with said guide tube. r I

JOHN GERARD.

Copies of this patent may be obtained for five cents each, by addressing-the *Oonimissionerot Patents,

Washington, D. 0. 

